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<h2><span class="refentrytitle">Macro BOOST_CONTRACT_BASES_TYPEDEF</span></h2>
<p>BOOST_CONTRACT_BASES_TYPEDEF — Define the name of the base type <code class="computeroutput">typedef</code> (<code class="computeroutput">base_types</code> by default). </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="reference.html#header.boost.contract.core.config_hpp" title="Header &lt;boost/contract/core/config.hpp&gt;">boost/contract/core/config.hpp</a>&gt;

</span>BOOST_CONTRACT_BASES_TYPEDEF</pre></div>
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<a name="idm45885986823776"></a><h2>Description</h2>
<p>This macro expands to the name of the <code class="computeroutput">typedef</code> that lists the base classes for subcontracting via <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_BASE_TYPES.html" title="Macro BOOST_CONTRACT_BASE_TYPES">BOOST_CONTRACT_BASE_TYPES</a></code>:</p>
<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">u</span>
    <span class="preprocessor">#define</span> <span class="identifier">BASES</span> <span class="keyword">public</span> <span class="identifier">b</span><span class="special">,</span> <span class="keyword">private</span> <span class="identifier">w</span>
    <span class="special">:</span> <span class="identifier">BASES</span>
<span class="special">{</span>
    <span class="keyword">friend</span> <span class="keyword">class</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">contract</span><span class="special">:</span><span class="identifier">access</span><span class="special">;</span>

    <span class="keyword">typedef</span> <span class="identifier">BOOST_CONTRACT_BASE_TYPES</span><span class="special">(</span><span class="identifier">BASES</span><span class="special">)</span> <span class="identifier">BOOST_CONTRACT_TYPEDEF</span><span class="special">;</span>
    <span class="preprocessor">#undef</span> <span class="identifier">BASES</span>

    <span class="special">...</span>
<span class="special">}</span><span class="special">;</span>
</pre>
<p>When used this way, users can redefine this macro if the <code class="computeroutput">typedef</code> must have a name different from <code class="computeroutput">base_types</code> (because of name clashes in user code, etc.).</p>
<p><span class="bold"><strong>See Also:</strong></span></p>
<p> <a class="link" href="boost_contract/tutorial.html#boost_contract.tutorial.base_classes__subcontracting_" title="Base Classes (Subcontracting)"> Base Classes</a> </p>
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